cheap afr??
Turbo Mini Forums

hi everyone..

was looking on ebay and came across this "wideband" afr gauge,



its seems very cheap comparing to the AEM ones(whitch i know come as a kit). its says it works with your existing lambda, we obviously dont have one so would have to get a lambda, but i was wondering would this be a mater of sourcing a wideband lambda sensor and hooking it all up? and you would have a fully working wideband AfR or is the wideband part thrown about losely in the add?

thoughts?

cheers

Edited by c2_mad on 13th Nov, 2011.

You would need a wideband controller as well as that only reads a 0-5v signal

160pounds is pence for a aem when it save u from blowing ur engine

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

http://14point7.com/Products.php

This your best bet for the cheapest wideband stuff. Requires some assembly if you want to save even more cash though.

Odd they are claiming it's anything to do with wideband, when they state it takes a signal from the cars factory 02 sensor, which in most cases is narrowband.

And even if it did have a wideband sensor, there is no way it would be suitable for inter connecting with the OEM parts.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Schrödinger's cat - so which one am I ???

We are running 5 of these:

http://www.ebay.co.uk/itm/AEM-Wideband-AFR...=item1c2031a760

However, there have been some reported issues with the AEM 0-5v signal drifting, not a problem if you just need a gauge but could be serious if you are using it for EGO control.

So we have just bought a couple of these:

http://www.ebay.co.uk/itm/INNOVATE-MTX-L-A...=item45f78df05b

The difference with the Innovate is that you can directly connect the serial data to a data-logger with a bit of electronic wizardry. So there should be no data corruption with digital/analogue conversion.

I'll let you know how they perform.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I have one of the MTX in a friends car, bought from Richard here ( UK supplier )

http://www.ebay.co.uk/itm/Innovate-Wideban...=item35b07c5945

And I have to say, the quality of it really is excellent. All connectors, wiring etc really are top notch. And so far it's working great. It's a huge step up from the LC-1, which was a right pain in the hole.

Plus as the gauge is the controller it's neater and you still have two flexible analogue outputs as well, as the serial stream Innovative use.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

thought it was to good to be true... will just have to keep saving then

what are your thoughts on norrowband AFR is it better than nothing or it it just ment to look pretty?

narrow bands are vauguely useful to help tune cruise but next to usless for full chat.

Narrowbands work perfectly for monitoring stiochiometric, ie 14.7:1, Lambda 1 etc

Which is exactly what they are designed to do.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Narrowbands are used by OEMs to keep the catalytic converter working correctly. Other than that, they're not very useful.

Jean

http://www.jbperf.com/

wideband it is then.. ill add that to the ever growin list. doubt i will ever have this mini done..